$OpenBSD: patch-Wnn_uum_setutmp_c,v 1.2 2017/04/29 14:31:40 espie Exp $
--- Wnn/uum/setutmp.c.orig
+++ Wnn/uum/setutmp.c
@@ -49,6 +49,10 @@
 /*	Version 4.0
  */
 #include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
 #include <sys/types.h>
 #include <utmp.h>
 #include <pwd.h>
